
// Copyright (C) 2007 Richard Uhler
// This file is part of Esiply.
//
// Esiply is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, Version 2,
// as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#ifndef _HOST_FUNCTION_H_
#define _HOST_FUNCTION_H_

// A host function is a function that hosts may define.
// specifically, it is a function of the form
// HostValue (*fp)(HostContext)

#include "NormalFunction.h"
#include "HostContext.h"
#include "HostValue.h"

typedef HostValue (*host_function_t)(HostContext context);

class HostFunction : public NormalFunction
{
public:
    HostFunction(HostContext context, const char* params,
            host_function_t fp);
    virtual Value* evaluate(Scope* scope);

private:
    host_function_t m_function;
};

#endif//_HOST_FUNCTION_H_

